forked from luck/tmp_suning_uos_patched
81e2a3d5b7
commit 2b85a34e91
(net: No more expensive sock_hold()/sock_put() on each tx)
changed initial sk_wmem_alloc value.
This broke net/atm since this protocol assumed a null
initial value. This patch makes necessary changes.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
91 lines
1.8 KiB
C
91 lines
1.8 KiB
C
/* net/atm/raw.c - Raw AAL0 and AAL5 transports */
|
|
|
|
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
|
|
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/atmdev.h>
|
|
#include <linux/capability.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/mm.h>
|
|
|
|
#include "common.h"
|
|
#include "protocols.h"
|
|
|
|
/*
|
|
* SKB == NULL indicates that the link is being closed
|
|
*/
|
|
|
|
static void atm_push_raw(struct atm_vcc *vcc,struct sk_buff *skb)
|
|
{
|
|
if (skb) {
|
|
struct sock *sk = sk_atm(vcc);
|
|
|
|
skb_queue_tail(&sk->sk_receive_queue, skb);
|
|
sk->sk_data_ready(sk, skb->len);
|
|
}
|
|
}
|
|
|
|
|
|
static void atm_pop_raw(struct atm_vcc *vcc,struct sk_buff *skb)
|
|
{
|
|
struct sock *sk = sk_atm(vcc);
|
|
|
|
pr_debug("APopR (%d) %d -= %d\n", vcc->vci,
|
|
sk_wmem_alloc_get(sk), skb->truesize);
|
|
atomic_sub(skb->truesize, &sk->sk_wmem_alloc);
|
|
dev_kfree_skb_any(skb);
|
|
sk->sk_write_space(sk);
|
|
}
|
|
|
|
|
|
static int atm_send_aal0(struct atm_vcc *vcc,struct sk_buff *skb)
|
|
{
|
|
/*
|
|
* Note that if vpi/vci are _ANY or _UNSPEC the below will
|
|
* still work
|
|
*/
|
|
if (!capable(CAP_NET_ADMIN) &&
|
|
(((u32 *) skb->data)[0] & (ATM_HDR_VPI_MASK | ATM_HDR_VCI_MASK)) !=
|
|
((vcc->vpi << ATM_HDR_VPI_SHIFT) | (vcc->vci << ATM_HDR_VCI_SHIFT)))
|
|
{
|
|
kfree_skb(skb);
|
|
return -EADDRNOTAVAIL;
|
|
}
|
|
return vcc->dev->ops->send(vcc,skb);
|
|
}
|
|
|
|
|
|
int atm_init_aal0(struct atm_vcc *vcc)
|
|
{
|
|
vcc->push = atm_push_raw;
|
|
vcc->pop = atm_pop_raw;
|
|
vcc->push_oam = NULL;
|
|
vcc->send = atm_send_aal0;
|
|
return 0;
|
|
}
|
|
|
|
|
|
int atm_init_aal34(struct atm_vcc *vcc)
|
|
{
|
|
vcc->push = atm_push_raw;
|
|
vcc->pop = atm_pop_raw;
|
|
vcc->push_oam = NULL;
|
|
vcc->send = vcc->dev->ops->send;
|
|
return 0;
|
|
}
|
|
|
|
|
|
int atm_init_aal5(struct atm_vcc *vcc)
|
|
{
|
|
vcc->push = atm_push_raw;
|
|
vcc->pop = atm_pop_raw;
|
|
vcc->push_oam = NULL;
|
|
vcc->send = vcc->dev->ops->send;
|
|
return 0;
|
|
}
|
|
|
|
|
|
EXPORT_SYMBOL(atm_init_aal5);
|